Salmon is high in Omega-3's. They are the good-for-you fats. They hep soften dry skin by holding in moisture, which will decrease the look of wrinkles and plump the skin.
Eating tomatoes can actually help block out the suns harmful UV rays, this will help against premature aging & skin cancer.
Citrus fruits, like oranges, are full of Vitamin C. This not only helps against cold prevention, but will also help fight off wrinkles.
Green tea is an all-around healer to skin. It helps protect the skin from melanoma and acts as an anti-inflammatory against acne and cuts.
Sulfur (found in eggs) helps keep skin smooth by repairing tissue and elasticity in skin.